902 backend developer English-speaking jobs in Warsaw

As a Senior Kotlin Developer you will be working in our Engineering Capco Poland Team as one of a team ... will work on very interesting, digital, innovate, investment platform together with data engineers, backend

You're a great fit if you have 4+ years of backend engineering experience 1.5+ years of commercial Go ... What you’ll own As a Lead Developer, you'll set the technical direction for the team and take end-to-end

, Angular frontend).Integrating the backend layer with the frontend.Implementing responsive user interfaces ... and implementing solutions for technical and business problems.Implementing automated tests for both backend ... technical risks and proposing mitigation strategies.Optimizing application performance on both the backend ... office in Warsaw.Main responsibilitiesDesigning, implementing, and maintaining web applications (Python backend

outlines opportunities for C# developers as part of the Warsaw Global Solution Centre, focusing on backend

Proven professional experience writing production‑grade backend services in Go (Golang). ... Experience building internal tooling or limited UIs to support backend systems (e.g., operational dashboards ... designing and implementing container‑based microservices and integrating open‑source tools to customize backend ... Experience with Kubernetes or similar container orchestration platforms, including deploying and operating backend

What you'll tackle in the first 6-12 months Lead the effort to break our backend and frontend out of ... Set up frameworks for effective cross‑site, cross‑functional collaboration between backend and frontend ... direction of a large‑scale, customer‑facing platform - breaking out of our monolith, modernizing our backend ... looking for a Senior Staff Software Engineer to join our Core Experience organization, supporting both backend

If you're passionate about backend engineering, distributed systems, and the rapidly evolving AI ecosystem ... cloud-native services on AWS, and observability solutions to build scalable, secure, and production-ready backend ... API-driven integrations between AI agents, enterprise platforms, and external servicesDevelop scalable backend ... platform servicesRequirements4+ years of professional experience with PythonStrong experience building backend

Experience with MCP and safe agentic/AI workflows for developer tooling. ... Enjoy improving developer platforms and workflows as much as writing services. ... Own CI/CD for API tooling and developer platforms (build, test, release, rollback). ... Enablement & Leadership Act as a champion for developer experience and API usability. ... This includes API governance and specifications, SDK/IaC/documentation generation, and developer platform

Experience with backend frameworks (e.g., FastAPI) and databases (SQL/NoSQL). ... technologies-expected : Python Docker Git LLM GenerativeAI AI CI/CD Backend Machine Learning Data Science ... If you’re comfortable with backend development and have a keen interest in data science and frontend ... Build and enhance backend components for advanced AI systems using Python and frameworks like FastAPI ... talented individuals to join: An AI-powered platform for industrial engineering, where you will build a backend

Position: .NET DeveloperLocation: WarsawSalary: up to 30 000 PLNOverviewWe are looking for a .NET Developer

not a coincidence, but a decision.Join a centralized platform engineering team building an Internal Developer ... Backstage) or developer productivity tooling.Programming or scripting skills in Go, Python, or advanced ... adoption, automation, and engineering best practices.YOU WILLDesign, develop, and evolve an Internal Developer ... practices.Create self-service deployment templates and automated delivery workflows that simplify the developer ... DevOps best practices and contribute to continuous improvements in platform reliability, automation, and developer

not a coincidence, but a decision.Join a centralized platform engineering team building an Internal Developer ... Backstage) or developer productivity tooling.Programming or scripting skills in Go, Python, or advanced ... adoption, automation, and engineering best practices.YOU WILLDesign, develop, and evolve an Internal Developer ... practices.Create self-service deployment templates and automated delivery workflows that simplify the developer ... DevOps best practices and contribute to continuous improvements in platform reliability, automation, and developer

You will be at the forefront of building intelligent systems that automate complex backend processes

testing, debugging, deployment, and support for enterprise-level web applicationsDevelop and maintain backend

Responsibilities Build and enhance frontend applications and backend services supporting treasury workflows

What this role is (and is not) Long‑term domain ownership and hands‑on architecture Not a generic backend ... logic, Ticketing time limits (TTL) Experience designing normalized domain models over GDS data Strong backend ... flow from search to booking to ticketing No economic inconsistencies between Supply and Economic Core Backend ... normalized supply layer over Sabre, build production‑grade flows from search to ticketing, and lead a small backend

The Role We are currently seeking a Senior Staff Backend Software Engineer to join our Portfolio Data ... technical issues Who You Are You have extensive experience in software development, including building backend

Strong expertise in Java and modern backend development practices. ... Software Engineering: Design, implement, and evolve backend services using modern engineering practices ... improvements when required requirements-expected : Proven experience as a Senior Software Engineer on backend

Experience: Proven experience as a Frontend Developer or in a similar role. ... Join our team as a  Frontend Developer  and help us deliver exceptional digital experiences. ... Join our team as a  Frontend Developer and help us deliver exceptional digital experiences. ... #LI-Hybrid As a  Frontend Developer , you will be responsible for designing, developing, and implementing ... #LI-Hybrid As a  Frontend Developer , you will be responsible for designing, developing, and implementing

This is a backend data engineering position – you'll build data infrastructure and pipelines, not dashboards